Experimental Physiology
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Quarterly Journal of Experimental Physiology 15.3 pp 319-326
© The Physiological Society 1925
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THE EFFECTS OF FATIGUE AND TEMPERATURE ON THE ADRENAL BODIES OF THE RAT

Swale Vincent 1

1 Department of Physiology, Middlesex Hospital Medical School

If white rats are exercised at room temperature (in winter) their body temperature will fall and the chromaphil reaction of the adrenal medulla will be markedly reduced. If they are exercised at higher temperatures their body temperature will rise and the chromaphil reaction will not be reduced.

At about from 18° to 200°C. the bodv temperature neither rises nor falls with exercise, and the chromaphil tissue is unaffected.

Considerable reduction of the temperature of the surrounding medium may, independently of exercise, cause a reduction of the chromaphil reaction if the animal's temperature becomes lowered; but this does not occur very frequently in the case of white rats.

It seems, then, that the effect of exercise on the chromaphil reaction is not direct but secondary to the lowering of the animal's temperature.

Submitted on June 25, 1925






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Copyright © 1925 by the The Physiological Society.